Every well done. You've just proved my point that people are individuals with individual drives and thought processes about things that everyone else is blind too. We are complex reasons with all sorts of reasonings and drivers.

So just because someone broadly agrees with others or disagrees with still others doesn't mean "echo chamber". Their reasons for agreement or disagreement will be their own. Their agreement may be full or partial or only sympathetic. Their disagreement may be emotional, driven by a desire to belong over ideological grounds, or from a place of propaganda driven ignorance.

And you will never know. Nobody ever knows what's going on in someone else's head unless they choose to share. The majority of people don't even understand what's going on in their own heads.

So. To believe that echo chambers are a real thing is asinine.

It's more about the type of people you want to hang out with. I'll return you to the image of the 10 year old screaming, what is in reality, nonsensical "instructions" at you on how to tie your shoes so they won't feel triggered to kill you.